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<?php if (!preg_match('#^[a-zA-Z]+[a-zA-Z0-9_]*$#', 'jkahsdk')) { echo 'error'; } else { echo 'ok'; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 9
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/SD0XE
function name:  (null)
number of ops:  10
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'preg_match'
          1        SEND_VAL                                                 '%23%5E%5Ba-zA-Z%5D%2B%5Ba-zA-Z0-9_%5D%2A%24%23'
          2        SEND_VAL                                                 'jkahsdk'
          3        DO_ICALL                                         $0      
          4        BOOL_NOT                                         ~1      $0
          5      > JMPZ                                                     ~1, ->8
    5     6    >   ECHO                                                     'error'
    3     7      > JMP                                                      ->9
    9     8    >   ECHO                                                     'ok'
   10     9    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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